Welcome to our live blog where we will be covering the deaths of teenage pair who fell from a balcony in South London.

Emergency services were called to the block of luxury apartments at Knights Tower in Deptford just after midnight.

An 18-year-old man and 19-year-old woman had fallen from a sixth-floor balcony.

They were pronounced dead at the scene.

Witnesses have to the tragedy said they believe the couple were trying to have sex when they fell.

1:12 pm

Police are investigating but have said they believe it to be a "tragic accident".

Samson Oguntayo, 32, a self-employed events manager who lives in the neighbouring Cornmill House, said he and his partner Blessing had seen the couple fall.

"They were trying to have sex on the balcony, the guy was lifting the girl and putting her on the bannister, he kept on doing it," he said.

"He was putting her on there - they were going back and forth. You could see they were doing some really dangerous stuff.

"It is not the first time we have seen people on the balcony acting up.

"At some point friends must have come outside and they got down and came back inside and then came back out again.

"This time they started doing it again.

"You see people on the balcony doing all sorts of things and I just felt it was one of those things and in a moment they will probably go back inside.

"The last thing I expected was to see them falling down five floors.

"We just screamed."

1:28 pm

Another resident who lives in the opposite block to Knights Tower in Deptford, South London, said the pair were seen kissing before they fell.

He said: "The occupants were inside, these two were on the balcony. We were shutting our blinds when we saw a couple on their balcony frolicking.

"They were kissing and stuff, she was telling him to get off her.

"We then shut our balcony."

The man, who did not want to be named, said less than 10 minutes later he heard a "bang".

His female partner, who also asked not to be identified, said: "We thought someone had been shot."

1:42 pm

Shradha Chaturvedi, 31, an auditor and resident of the second floor of Knights Tower, said she had heard a loud "boom" last night, which she believed to be a firework at first.

"I heard a very, very loud noise and a lady screaming initially - I heard a boom and at first I thought a firework had gone off or something," she said.

"My husband came down and there were two other guys outside who were totally drunk. They said 'Don't go out there'. There was a woman out there who was crying."

Maureen Flynn, 22, a resident of a neighbouring block, said: "I did not see them fall but I saw their friends come out on to the balcony. They were crying, they did not know what had happened.

"I had to tell them 'Your friends are dead'."

Ellen Faulkner, 31, a resident of the nearby Canterbury House block, who gave birth to a baby boy four days ago, said the shock of hearing about the deaths had left her "shaking" last night.

"This is a new building, you don't expect anything like this to happen," she said.

2:15 pm

Bouquets of flowers have been placed at the foot of the tower block, which has spectacular views of the Thames and Canary Wharf.

Detective Chief Superintendent Helen Millichap, the borough commander for Greenwich, said: "We believe this was a tragic accident involving two young people who were students attending a local college.

"We cannot release detailed information at the moment because we are still informing their families. We will work closely with the college to make sure any affected students receive information and support.

"Our thoughts are with the family and friends of these young people."

2:45 pm

The London Evening Standard is reporting that the woman is thought to be Russian and the man Mexican.

Police were trying to trace their families today, the paper says.

3:30 pm

It is believed the woman pulled the man over as she fell.

A spokesman for Michael Laurie Ltd, which runs the complex, told the Standard: "There was a party. She was sitting on the edge of the balcony and just slipped and pulled him with her and she grabbed hold of him. They both fell over it and that's as I understand it.

"It wasn't a rowdy party, just an ordinary party. No residents had complained about any noise or anything like that.”

3:42 pm

The pair were students at Bellerbys College London and English language school Embassy London, both in nearby Stowage, which say it is supporting friends and family over the tragedy.

In a joint statement, Principal of Bellerbys College London Paul McGregor and centre director of Embassy London David Rowland said: "The police informed us of a tragic off-campus accident in the early hours of Wednesday 11th June, in which a student from Embassy London and a student from Bellerbys London, aged 18 and 19 respectively, fell from the balcony of a privately owned London residence, and were pronounced dead at the scene.​

"We are supporting the families of the deceased through this very difficult time."

4:40 pm

Blessed Adedoyin, 29 and Samson Oguntayo, 32, were watching television when they heard a commotion.

Speaking to the Evening Standard, Ms Adedoyin said: "It was so dark in the garden it was difficult to see. I called the ambulance and my partner went down.

"I just can't get the image out of my head. I thought it would be better today, but it's not. I don't know if what I saw will ever go away."

5:37 pm

Obviously, the deaths of the two students has devastated the local community.

Matthew Pennycook, Labour's parliamentary candidate for Greenwich and Woolwich, wrote this on Twitter earlier.

Thoughts go out to the families of the two people who died in last night's tragic accident on Wharf Street, Deptford http://t.co/CdAhPniKdi